1. The transaction was rejected, probably because the balance of the CCB card of the user is insufficient, which will directly lead to the payment failure, because the balance can no longer be paid;

2. CCB cards are mostly core cards or magnetic stripe cards. If the chip or magnetism of the bank card is damaged, that is, the bank card is demagnetized, the user will not be recognized normally in the process of swiping the card, which will lead to the transaction of the bank card being rejected;

3. The freezing of construction bank cards will also lead to the rejection of transactions: there are many factors that cause the freezing of bank cards, such as the loss of bank cards, the loss of users, and the incorrect continuous input of bank card passwords, which will also lead to the freezing of bank cards and judicial freezing. Normal use can only be resumed after thawing.

The above is the relevant content that CCB's transaction was rejected by the bank.